Refractometers

[fishnu]

There is a point here. Distilled only calibrates the bottom end (1.00 as equal to an index of refraction of 1.333, and salt water as an index of refraction of 1.339 (at 20 degrees c). However, it is possible that a device could be miscalibrated for "slope" so that its perfect for distilled water but would read very salty water incorrectly.

I guess the only way to test this would be with some very salty solution.

TIME FOR A MARGARITA!!!!!!!!

[rbursek]

From what I got out of Randy's article at Reef Central, refactormeters are made for reeding fresh water stuff, if used for salt water SG they need to be recalibrated for it and that is done with pinpoint 53 solution. I will tru and PM Boomer to vallidate this, since Randy does not subscribe here, I think John Bertroni does but spend his time more on the Chem forum.

[fishnu]

If you were a Bears fan I would have to take what you say at face value. However I will need a non-Packer cosigner for verification!!!!!!

[rbursek]

Fishnu,
well IF I recall right THE BEARS where the only team that scored higher then the Packers when they play each other, but Farve had that Far, Far away look in his eyes when walking out on the field and helmit held down low instead of running out and helmit held high and smileing that said he lost/blew the game. Back to this calibration thing, I have not worded it totally right, but refactormeters are used to measure SG of things in fresh water base, not salt water. That is why they have to be recalibrated with pinpoint 53 to get them adjusted to a salt water based solution. I PM Boomer which subscribes here and RC to help explain it better, I hope he chimes in. I will PM on RC too. This is not an argument, but I see so much IMO, and misinformation on both sites, and some is what works for your system and I understand that, but when it comes to Chem and machanical itens it is more aboutwhat is right and what is not.
Ya, with out Farve this year and sad, it will be a whole new love or hate afair!!! But better going on a great seesson then McMahn!!!!!!

[AQTCJAK]

OK to clear things up I have read the same article & simular & have thought well I should see. So with an ATC Refracto & RO/DI the reading was 0 with the solution it was ). SO I thought ok lets check to see what happens when cold same results. So there you have it. There are solutions that are out there that are just ot make money or if you have a non-atc refracto

[fishnu]

As noted, it is possible to be spot on at 1.0000 and still be off at 1.026. I will apply my margarita tonight and let you know what it reads.

Actually, I wish I still lived in Atlanta.... Matt Ryan is gonna kick butt down there...

And he likes dogs.

[AQTCJAK]

[Wolfgang8810]

I appreciate the deal Jack and it ais a wonderful Product. I am sorry this thread got hijacked.

[AQTCJAK]

if a thread of mine didnt get hijacked how else would anyone say hello to me other than hi Jack

[rbursek]

Jack,
I did not mean to hijack the tread, but when I read here about useing RODI to calibrate I wanted to correct that. Your post about cold and room temp solutions I got the impression you are reffering to your readings where the same because you are useing a ATC refactormeter. I am not reffering to the temp of the fluid used to calibrate, I am under the impression that you need pinpoint 53 to calibrate it for salt water use to be accurate.

[fishnu]

Originally Posted by AQTCJAK

My margarita registered about 80, but it was too strong for me to tell whether that was SG or Proof.

[AQTCJAK]

Originally Posted by rbursek

Jack,
I did not mean to hijack the tread, but when I read here about useing RODI to calibrate I wanted to correct that. Your post about cold and room temp solutions I got the impression you are reffering to your readings where the same because you are useing a ATC refactormeter. I am not reffering to the temp of the fluid used to calibrate, I am under the impression that you need pinpoint 53 to calibrate it for salt water use to be accurate.

I understand that your statement is very correct like I said but only for the non atc units. Years ago we had to use that calibration fuild to calibrate now we can use Ro or Distilled if the units are ATC there are still units outthere that are not so the fuild is needed

[rbursek]

Thanks Jack,
here to learn!

[AQTCJAK]

As we all are.

[rbursek]

Jack,
I found the article, I was wrong but going to try an attach it just for your reading. You can just go to the calibration portion to keep it easy.